Network Deployment (Distributed operating systems), v8.0 > Develop and deploying applications > Develop OSGi applications

Sample OSGi applications

OSGi Applications support includes sample applications that demonstrate how to write and package bundles into an enterprise bundle archive (EBA) file.

Two sample OSGi applications are provided: "Blog" and "Blabber". Both applications demonstrate all of the following OSGi Applications features:

• Use Blueprint management.

• Use bean injection.

• Use services from the OSGi service registry.
• Publish services to the OSGi service registry.

• Use the Java Persistence API (JPA).

The samples are provided in the OSGi_blogSample.zip and OSGi_blabberSample.zip compressed archive files, which can be downloaded from the Samples download page. The EBA file for each sample application is in the installableApps directory of the sample compressed file, and the source code is provided in other subdirectories of the sample compressed file.

For information about how to install and run each sample application, see the sample_osgi_blog_readme and sample_osgi_blabber_readme respectively. These files are available in the root directory of the associated sample compressed file. They are also available in the information center as topics OSGi blog sample application and OSGi blabber sample application.

Blog sample application

The blog sample application is a traditional blogging application, used for publishing essay-length articles and allowing readers to comment on them. The application contains the following bundles:

• com.ibm.ws.eba.example.blog.persistence.

  This bundle contains JPA-related code, and the interfaces that enable the main application code to update and query blog entries.

• com.ibm.ws.eba.example.blog_1.0.0.

  This bundle contains the main application logic code and interacts between the web front end and the back end persistence code layer.

• com.ibm.ws.eba.example.blog.web.

  This bundle contains the static web content and backing Java code for the web front end of the application.

• com.ibm.ws.eba.example.blog.api.

  This bundle contains the API for the sample.

• com.ibm.ws.eba.example.blog.persistence_1.1.0.

  This bundle contains an optional upgraded persistence bundle that also supplies a comment service.

To run the blog sample application, you can use all the bundles that are listed, or all the bundles except the upgraded persistence bundle (the last in the list).

See OSGi blog sample application.

Blabber sample application

The blabber sample application is a microblogging application, used to enable many different people to share brief comments. The application contains the following bundles:

• com.ibm.ws.eba.example.blabber.persistence.

  This bundle contains code that relates to the Java Persistence API (JPA) layer and the interface for the main application code.

• com.ibm.ws.eba.example.blabber.

  This bundle contains the main application code and the code for the web front end of the application.

See OSGi blabber sample application.

Subtopics

• OSGi blog sample application
  The blog sample application is a traditional blogging application, used for publishing essay-length articles and allowing readers to comment on them. This sample application shows how to write and package bundles into an enterprise bundle archive (EBA) file. The sample includes example code for Blueprint management, bean injection, using and publishing services from and to the OSGi service registry, and the use of Java persistence.
• OSGi blabber sample application
  The blabber sample application is a microblogging application, used to enable many different people to share brief comments. This sample application shows how to write and package bundles into an enterprise bundle archive (EBA) file. The sample includes example code for Blueprint management, bean injection, using and publishing services from and to the OSGi service registry, and the use of Java persistence.

Parent topic: Develop OSGi applications

Related concepts:

About OSGi Applications

Related tasks:

Develop a composite bundle
Secure OSGi Applications
OSGi blog sample application
OSGi blabber sample application

Related reference:

Best practices for developing and working with OSGi applications

Develop enterprise OSGi applications for WAS
OSGi Applications: Troubleshooting tips
Reference topic Feedback
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